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From "Ariel Weisberg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10199) Warn on tiny disks instead of failing startup
Date Wed, 26 Aug 2015 19:01:47 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14715343#comment-14715343
] 

Ariel Weisberg commented on CASSANDRA-10199:
--------------------------------------------

[Can you get configuration exception to wrap the IOException?|https://github.com/apache/cassandra/compare/cassandra-2.2...jbellis:10199#diff-a8a9935b164cd23da473fd45784fd1ddR499]
[Same wrapping issue here, maybe time to create a helper function?|https://github.com/apache/cassandra/compare/cassandra-2.2...jbellis:10199#diff-a8a9935b164cd23da473fd45784fd1ddR537]
[Ponies would be to log the directory and total space in megabytes as well.|https://github.com/apache/cassandra/compare/cassandra-2.2...jbellis:10199#diff-a8a9935b164cd23da473fd45784fd1ddR504]
[For this particular informational kind of warning I would prefer a unit larger than bytes,
but this is bike shedding.|https://github.com/apache/cassandra/compare/cassandra-2.2...jbellis:10199#diff-a8a9935b164cd23da473fd45784fd1ddR541]
Possibly a float with 2-3 digits of precision after the decimal if I need to be more precise.


> Warn on tiny disks instead of failing startup
> ---------------------------------------------
>
>                 Key: CASSANDRA-10199
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10199
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>            Priority: Minor
>             Fix For: 2.2.x
>
>
> m3.medium instances only have 4 GB disk space.  We allocate 8 GB to commitlog by default.
> We should (1) cap CL to 1/4 of disk space and (2) warn when a tiny disk is seen.



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